Meeting abstract
Thermal stability and photorecording in amorphous Cuₓ(As₂Se₃)₁₋ₓ system
S. R. Lukić
; Institute of Physics, University of Novi Sad
A. F. Petrović
; Institute of Physics, University of Novi Sad
D. M. Petrović
; Institute of Physics, University of Novi Sad
Abstract
Investigations of mechanical, electrical, optical and other physico-chemical properties of amorphous semiconducting materials have shown that these properties depend substantially on the system composition.
In view of the known fact that the introduction of copper into arsenic selenide influences substantially its conducting characteristics, this work gives an analysis of the effect of an increased copper content in Cuₓ(As₂Se₃)₁₋ₓ on its optical energy gap. In addition, changes in thermal stability of the system are investigated, the interval between phase transitions points is determined, and the most probable mechanism of thermal decomposition is proposed.
A series of thin films obtained by evaporation of the investigated materials was used to investigate the photorecording effect caused by prolonged laser irradiation. Changes in transparency were studied as a function of exposure and concentration change of the components at room temperature. Finally, it was investigated the possibility to erase reversibly the dark traces caused by irradiation, by a prolonged heating of films at characteristics temperatures.
Keywords
Hrčak ID:
339010
URI
Publication date:
20.12.1989.
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